Journal ArticleDOI
Selective laser sintering of single‐ and two‐component metal powders
TLDR
In this paper, a comparative characterisation of selective laser sintering (SLS) mechanisms of single and two-component powders is presented, where the effects of the volume fraction of liquid phase and powder absorptance were discussed.Abstract:
A comparative characterisation of selective laser sintering (SLS) mechanisms of single‐ and two‐component powders is presented The effects of the volume fraction of liquid phase and the powder absorptance were discussed Single‐component Ni‐alloy, Fe and Cu powders as well as two‐component powder systems based on Ni‐alloy, Fe and Cu were investigated In particular, the following types of two‐component powder systems were studied: Ni‐alloy‐Cu and Fe‐Cu powder mixtures as well as Cu‐coated Ni‐alloy powder and Cu‐coated Fe powders SLS experiments were performed with a CW‐ Nd:YAG laser (λ=106 μm) The acting mechanism in all cases was liquid phase sinteringread more
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Patent
Powder for laser sintering, and use
Ma Kangkai,Hirth Ulrich Andreas +1 more
TL;DR: In this article, a surface-modified powder for laser sintering that allows improved incoupling of the radiation energy of the laser was proposed, which avoids problems arising in the laser Sintering of materials having a low absorptance for the laser radiation.
References
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PatentDOI
Direct selective laser sintering of metals
Suman Das,Joseph J. Beaman +1 more
TL;DR: In this paper, a method of fabricating a fully dense, three dimensional object by direct laser sintering is disclosed, in which a degased powder layer is dispensed over a target surface and a beam of directed energy melts metallic powder in order to form a solid layer cross section.
Journal ArticleDOI
Absorptance of powder materials suitable for laser sintering
TL;DR: In this paper, the normal spectral absorptance of a number of metal, ceramic and polymer powders susceptible to be utilised for selective laser sintering (SLS) technique was experimentally determined.
Comparison between CO2 and ND:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: In this paper, the performance of different sources of laser disponibles for frittage selectif direct au laser des poudres metalliques without aucun liant polymere is analyzed.
Comparison between CO2 and Nd:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: In this paper, the performance of different sources of laser disponibles for frittage selectif direct au laser des poudres metalliques without aucun liant polymere is analyzed.